Contents

Bulletin of the Lebedev Physics Institute

---

Vol. 53, No. 7, 2026

---

Estimation of the Energy of Extensive Air Showers Recorded at the Tien Shan High-Altitude Scientific Station

A. L. Shepetov, M. Yu. Azarkin, A. M. Anokhina, Ya. V. Verminskaya, L. I. Vildanova, V. I. Galkin, V. V. Zhukov, M. R. Kirakosyan, S. A. Mamina, O. V. Meshkov, M. A. Samoilov, and V. A. Ryabov p. 275  abstract

Ultrahigh-Energy Proton–Proton Interaction in the Laboratory Frame as a Source of Proton, Neutrinos, and Gamma-Ray Spectra in Astrophysics

O. I. Piskunova p. 282  abstract

Dispersed Scintillators Based on Optical-Grade Silicone

D. A. Kuleshov, K. O. Kurinov, I. O. Maliy, and Yu. V. Stenkin p. 286  abstract

Thermodynamics of the QCD Crossover at Finite Temperature and Zero Chemical Potential within the PNJL Model for a QGP with Two Light Quark Flavors

M. A. Lakehal and A. Ait El Djoudi p. 290  abstract

One-Step Combustion Model for Methane‒Air Mixtures over a Wide Range of Parameters

A. D. Moroshkina, V. E. Rogozhnikov, K. D. Khvostochenko, V. V. Mislavsky, E. V. Sereshchenko, and V. V. Gubernov p. 296  abstract

---